Indexed book.



PATENTED MAR. 2,4, 1908. A. P. DEAN.`

INDEXED BOOK.

APPLICATION FILED ma. 11, 1904.

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' H I I I llMHHWHi{WIHNHNNHMUNI!"HHI l y mcww ALBERT F. DEAN, OFCHICAGO, ILLINOIS.

INDEXED BOOK.

Specification of Letters Patent.

Patented March 24, 1908.

Application filed February 11, 1904. Serial No. 193,099.

To all whom it may concern.'

Be it known that I, ALBERT F. DEAN, citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Indexed Books, (CaseNo. 1,) of which the following is a full, clear, concise, and exactdescription, reference being had to the accompanying drawings, forming apart of this specification.

My invention relates to indexed books,

particularly to the arrangement of indexing.

means for language dictionaries or other vocabularies which contain analphabetical list of words.

In Patent No. 500,262issued to me June 27, 1893, I describe a dictionaryin which the book has been divided into a number of sections or parts togive room for the attachment of a projecting or index tag to each leaf,each of these sections or parts being separately bound and containing onthe front page or cover a list, alphabetically arranged, of the first orsome other index word on each leaf, with a line or other indicatingsymbol crossing from each word to the position occupied by the tagattached to the leaf containing said word. To find a desired word in thedictionary, the index word on the cover nearest to the desired word wasfound and'a tag corresponding to said index word was raised and the pagecontaining the desired word was thus exposed to view.

Generally speaking, my resent invention is an improvement overl t einvention disclosed iii the above patent and I provide an improvedarrangement of the indexing tags whereby, other things being equal, Imay increase the capacity of the dictionary twofold. This I accomplishby providing only each alternate leaf with a tag. On the cover of thebook or other index page I draw a line leading from the correspondingtag and before this line I place the index word of the leaf not providedwith a tag, and below this line I place the index word of the leafprovided with the index tag and following the leaf not thus provided.Each tag, therefore, serves as an indicating means for two pages, indistinction from my above named invention wherein a tag served toindicate but one page.

In my present invention if the `word sought for is nearest to the indexword above tag, and the leaf to which said tag is se- Y cured may beturned over and the word sought for may be found.

By reference to the figures my invention will be more clearlyunderstood, and, Figure l shows the arrangement of a dictionary dividedinto three sections. Fig. 2 shows a single section detached from theother sections, the section being open to show the disposition of theindex tags. Fig. 3 shows the book in its closed position, and Fig. 4shows the dictionary with the cover thrownv back at an angle, thuspropping up the back which carries the sections.

Like reference characters refer to like parts throughout the differentfigures.

I have shown my invention as applied to a French dictionary and theentire dictionary has been divided into three sections l, l, l mountedupon the back 2 of the cover 3, a flexible hinge 4 connecting said backwith a flap 5, Which, when closed over the back 2 completely covers thesections l. The hinge 4 being flexible will readily accommodate itselftoany thickness of the sections and when the dictionary is in use may beturned back to be disposed at an angle to pro up the back 2, as shown inFig. 4, or it may be folded flatly against the back 2 when it is desiredto lay the dictionary fiat upon the table, as shown in dotted lines,Fig. 4. To allow seizure of the lowest tag on each section I provide astrip 6 below each section which raises each section away from the back2. I provide a series of tags 7 7 disposed next'to each other and in anapproximately straight line when the section is closed, as shown in Fig.l, each alternate leaf only being provided with a tag. An indicatingline 8 on the cover 9 of each section passes inwardly from thecorresponding tag to a pair of index words which may be arranged side byside, as shown on the second section l, Fi l, but are preferablyarranged above and below which indicating line, as shown on the firstsection l Fig. l. The index word of the leaf not provided with a tag ispreferably disposed over the corresponding indicating line and the indexword o the succeeding leaf provided with a tag is disposed below saidindicating line.

For illustration, suppose the word desired comes after but is very nearthe word carte. The finger is run along the corresponding indicatingline 8 until it rests above t 1e corresponding tag 7 and by pressingslightly on this tag, the finger may be slipped under the untagged,preceding, leaf 10 of which the index word is carte and this leaf beingthen turned over, the desired word will be found thereon.

Should the desired word precede but be very close to `the index wor(certain which is associated with the same indicating line as the wordcarte, the finger is* again run along the corresponding indicating lineSbut below the index tag 7 and the leaf to which this tag is attachedbeing thrown open, the desired word will be revealed, this leaf ben ingthe one upon which appears the index word certain.

Thus by my improved indexing arrangement, although I provide a ta foronly each alternate leaf or double page, still retain indexing means foreach leaf and the capacity of the book is increased two-fold withoutincreasing the size or space.

I do not wish to be limited to the adaptation of my invention as shown,as this manner of indexing may be employed on any single indexed book.Changes may also readily be made in the precise arrangement withoutdeparting from the spirit of the invention, but

I claim as new and desire to secure by Letters Patent:

l. A book having an index word on each leaf, an index tag secured toeach alternate leaf of said book, an indicating line leading from eachtag, two index words printed adj acent each line, one of the words beingthe index word of the leaf to which the corresponding tag is secured,the other word being the index word of the leaf -next preceding saidleaf to which the tag is secured, each line forming a guide path to thetag from the two words associated therewith.

2. A book having an index word on each leaf, an index tag secured toeach alterna-te leaf, an indicating line leading from `each tag, anindex word printed directly over each line, an index word printeddirectly below each line, the word over each line being the index wordof the leaf to which the corresponding tag is secured, the word belowthe line being the index word of the leaf next preceding the leaf towhich the tag is secured, each line forming a guide path from the twowords associated therewith to the corresponding tag.

In witness whereof, I hereunto subscribe my name this ninth day ofFebruary A. D., 1904.

ALBERT F. DEAN.

Vitnesses:

CHARLES J. SCHMIDT, HARVEY L. HANsoN.

